Point for dipper-teeth.



P. M.& P. R. TIPPING.

POINT r03 DIPPBB TEETH.

APPLICATION FILED NOV. 6, 1911.

Patented May 5, 1914.

M M w? W? 5 W/T/VEJJEJ v UNITED STATES PATENT OFFICE.

rum: in. TIPPING AND FRANK a. TIPPING, ors'r; PAUL. MINNESOTA.

roman ron Duran-TEETH.

Specification of Letters Patent.

Patented lilay 5, 1914.

Application filed November 6, 1911. Serial No. 658,836.

To all whom it may concern:

Be it known that we, FRANK M. TIPPING and FRANK R. TIPPING, of St. Paul,Ramsey The object of our invention is to provide a dipper tooth-pointwhich can be easily and quickly put on the shank of the tooth-and asreadily, removed. Generally in devices of this kind the point is mountedin such a manner that it becomes wedged on the shank and corroded sothat it is practically impossible to remove the point without breakingthe tooth.

A further object is to provide a point mounted in such a Way that thestrain will be distributed on the strongest part of the tooth shank.

A further object is to provide a oint having a suiiicient amountof metato allow for welding.

The invention consists generally invarious constructions andcombinations, all as hereinafter described and particularly pointed'outin the claim.

In the accompanying drawings forming part of this specification, Figurel is a sidenew of a dipper tooth embodying our invention, Fig. 2 is atop view of the same,

Fig. 3 is a side view of the point removed from the tooth, Fig. 4 is aside view of the'forward portion of the tooth, Fi 5 is a transversesectional view throug tooth and point, on the line wm of Fig. 1, Fig. 6is. a top view, showin the construction' of the tongue on the toot Inthe drawing, 2 represents the shank of the tooth, havin the usual socket3 to receive the edge 0 the dipper; or shovel.

4 is a tongue, projecting forwardly from the tooth shank and having uper and lower parallel surfaces 5 and 6, the end of the shank beingrecessed at the rear of the surfaces 5 and 6 toform projecting shouldersor webs 7. The surface 5 is shorter than thesurface 6 and merges intoa'downwardly inclined surface 8 which intersects a shorter, upwardlyinclined surface 9 forming a' continuation of the surface 6. The orwardportion of the tongue has the appearance, therefore, of. an irregularwed e, one face being longer than the other. T e tongue is also providedwith a longitudinal, centrally arranged depression or recess 10,extending the i from the rear end of the surface 5 forwardly around thenose of the tongue to'the rear end'of the surface 6. (See Figs; eand 6.)This recess is preferably arranged along the middle line of the tongueand equally spaced from the side faces thereof. r

11 is the point ofthe tooth, having a fiat under surface and a curvedupper surface, as usual in points of this kind, and provided with asocket 12 corresponding in form to j the point and tongue are assembledand form substantial bearing surfaces for the rear endof the point. Thewall of the socket 12 is provided with a rib 14: extending entirelyaround the socket and adapted to fit snugly into the recess 10 in thetongue when the parts are put togetheri This rib and recess positivelyprevent lateral movement of the point with respect to the tongue,holding them firmly in alinement with one another. Endwise movement ofthe point to separate it from the tongue is prevented by a bolt 15 thatpasses through the point 11 and the tongue 4, the point beingcountersunk to receive the head and the locknut of the bolt, as shown inFig. 5. Pressure on the curved surface of the oint will be transmittedto the surface 8 an from thence through the lower jaw or prong of thepoint to the rear portion of the tongue at the point where it is joinedon the shank. The strain,

therefore, will be exerted inwardly and tendency to split the point andthe shank will be avoided. The projecting shoulders 7 cofiperate withthe tongue 4 to form recesses in which the beveled fac'es'13 are seated,and pressure on the tooth point will only serve to wedge it more firmlyinto the shank of the tooth;

We claim as our invention The combination, with a dipper tooth shankhaving a tongue formed thereon and shoulders at the base of said tongue,said shoulders having inclined surfaces overhanging said tongue andcooperating therewith to form wedge-shaped recesses, the upper and undersurfaces of said tongue being" parallel substantially with one an-'other and merging into converging surfaces of unequal length at the tipof said tongue, the upper and under surfaces of said tongue noemeoehaving longitudinal recesses therein extend said arms and said tongue inthe rear of the 10 ing from the base to the tip thereof, a pointbeveled-end surfaces of said tongue.

having a longitudinal socket corresponding In testimony whereof, We'havehereunto substantially in form to said tongue and set our hands this 4day of November, 1911.

5 provided with a longitudinal rib to enter the FRANK M. 'TIPPING.recess in said upper and under surfaces, the FRANKIE. TIPPING. arms ofsaid point above and below said 'lvitnesses:

socket having beveled ends to fit the surfaces GENEVIEVE E. SORENSEN,

of said shoulders, and a bolt passing through EDWARD A. PAUL.

